Radiator.



.l. M. ItUUtHti.

RADIATOR. APPLICATION'FILED MAR. I4. I918.

1 Patented Mar. 25,1919.

JOHN M; rnnnrms, or BUFFALO, New YORK, ASSIGNOR 'ro rnnnnns manoracrnnme COMPANY, INC, OF BUFFALO, NEW YORK, A COBEOMTION OF NEW YORK.

RADIATOR.

Specification of Letters Patent.

?atented Mar. 25, 1919.

Application filed March 14, 1918. Serial No. 222,314.

'1 '0 all whom it may concern:

Be it-known that I, JOHN M. Fnnnnns, a citizen of the United States, residing in Buffalo, in the county of Erie and, State of New York, have invented new and useful Improvements in Radiators, of which the,

following is a specification.

This invention relates to that type of radiators which are used for cooling-the water of explosion engines which operate automobiles, although the same may also be used for other purposes, and more particularly to that type of radiatorsin which a plurality of tubes are arranged side by side forming water passages or conduits between the outer sides of adjacent tubes and air passages through the interiors of these tubes, so that the heat of the water is carried away.

It is the object of this invention to increase the radiating capacity of these tubes by providing the interior of the same with.

radiating members which can be produced at low cost, are capable of being manufactured and assembled easily and will materially strengthen the radiator and increase its efliciency. v I

In the accompanying drawings: Figure 1 is a fragmentary front elevation, partly in section, of the core of the radiator containing one form of my improvements.

Fig. 2 is a longitudinal section of the same taken on line 22, Fig, 1. Fig. 3 is a perspective view of one of the radiating members which is adapted to be placed in one of the air tubes.

Similar characters of' reference indicate corresponding parts throughout the several views.

The core of the radiator in its general organization comprises a plurality of metal tubes each of which is preferably hexagonal in cross section and has its opposite ends 1, 1,.enlarged in diameter while the central part 2 thereof intermediate of'its ends is reduced in diameter. These tubes when as sembled, engage each other on their correried away by the air which passes through the inner side of the air tubes.

For the purpose of increasing the radiation of the heat from these tubes to the atmosphere, the interior of each of these "tubes is provided with a radiating member which is constructed in accordance with my invention. As shown in the drawings, each 0 these radiating members is preferably constructed of two sections which are adapted to be inserted into one of the air tubes from opposite ends thereof. Each of these sections is bent or folded from a sheet or strip of metal so as to form an annular row of radlatlng fins which are arranged circumierentially about the axis of the tube in which the same are mounted. Each of these fins is preferably constructed in the form of a plait, the two plies 4, 4 of which are con nccted at their outer longitudinal edges.

- divided by the auxiliary tube and the fins of the radiating member into a plurality of streams each of which engages with the adjacent metal surfaces and operates to carry away the heat of the water from the inner "side of the respective air tube.

In order to lncrease the amount of heat which the aircarries away in its passage through the air tube, each of the fins is preferably constructed of substantially spiral form in a direction lengthwise of the air tube; In the preferred form of the radiating member, the outer ends of the fins are retained in a radial position relatively to the axis of the respective air tube so as to present a neat and attractive appearance of the radiator core when viewed from either side but the inner ends of the fins of both radiating sections are bent circumferentially relatively to their outer ends in order to produce a spiral formation of the same. In the referred construction, the outer ends 6 of t e fins of both sections engage with th tubes are flush with '9 of each fin ha corresponding inner corners of 'thehexagonal enlargements at opposite ends of the respective air tube and the inner end of the fin of each of these sections is bent circumferentially in one direction while theinner 7 of the corresponding fin of the other section is bent circumferentially in the opposite direction, as best shown in Fig. 3. By this means the current of air passing through the spaces between the several fins of the radiating member is split up and given a spiral twist which operates to partly obstruct the passage of the air and retard its passage through the air tube and thus insure the maximum absorption of heat by the air from the hot water before escaping from the air tube. I

The outer end of 'each fin of each radiating section is preferably,provided with a laterally-projecting portion 8 which is adapted to engage with the enlargenu'ait of one end of the air tube while the inner portion its outer longitndinaledge retracted so as to permit the same to engage with the contracted intermediate part of the respective air tube and also form an inwardly projecting shoulde 10 between the projecting outer end portion 8 and the retracted inner portion 9 of this edge, which is adapted to engage with the outwardlyfacing shoulder 11 formed in the bore of the air tube between the enlarged end and the contracted central part thereof, as clearly shown in Figs. 2 and 3. The radiatin member is constructed of two non-contractible sections which are introduced into the respective air tube from oppositc-side's thereof and this inward inovement is limited by the engagement of the shoulders of these sections with the shoulder of the tube so that the outer ends of these the opposite ends of the practically respective air tube.

After the several tubes and radiating sections have been thus assembled, the opposite sides of the core are successively dippedin a bath of solder so as to connect the enlarged ends of the several tubes with each other and form a water-tight joint therebetween which will prevent the leakage of water from the tortuous conduits and at the same time the sections of the radiating members are connected with the air tubes so as to prevent these members from becoming displaced.

Owing to the simplicity of the construction of this radiating member and the ease same econon'iically the tube, and com. arises a fins arranged inan annu ar' row about the with which the same can be assembled with the air tube, it is possible to produceilm and expeditiously by the use of comparatively unskilled help and owing to the large radiating surface which is provided the efliciency of the radiator is greatly increased. Owing to the radlating members being practically rigid and non.- contractible, the strength of the radiator is increased so as to enable the saine to withstand greater shocks when'in use.

' I claim as my invention:

1. Aradiator comprising a plurality of tubes which are arranged side by side and each of which has enlarged ends and a contiacted central part, and a non-contractible radiating member arranged in each of said tubes and comprising two sections which are introduced into said tube from opposite ends thereof and each of which is provided at its outer end with an enn'irgement which engages with the respective enlarged end of the tuber 2. A radiator v comprising a plurality of tubes which are arranged side by side and each of which has enlarged ,ends a d a contracted central part, and, a non-conti.'actib,le radiating member arranged in each of said tubes and com prising two sections which are introduced into said tube from opposite ends thereof and each of which isprovided at its outer end with an enlai'gement which engages with the respective enlarged end of the tube, and comprises a luralityof spiral fins arranged in an annui 3. A radiator comprising a" tubes which are arranged side each of which has enlarged ends plurality of and a conar row about the axis of said tube. 1

y side and tracted central part, and a non-c'ontractible radiating member arranged in each of said tubes and comprising two sections which are introduced into said tube from opposite ends thereof and each of which is provided at its outer end with an enlargement which engages with the respective enlarged end of JOHN M. reo ens.

lurality of spiral 

